CODEWITHSUNDEEP
androidimage
Beppi's
Beppi's

Reputation: 2129

Animate image size

I would like to have an image "bump" (or change its size) according to music. I don't need the music detect side, I just need a way to resize the image dymaically and according to an animation. What is the best way to do this?

Upvotes: 0

Views: 47

Answers (3)

T3KBAU5
T3KBAU5

Reputation: 1871

If you're using at least API 11 and want to animate it smoothly, you can use an ObjectAnimator to animate various changes to the properties of a View. For example:

ObjectAnimator oa = ObjectAnimator.ofFloat(myView, View.SCALE_X, 1.0, 1.25);
oa.setDuration(25); //how long the animation lasts in ms, probably short for your purposes
oa.start();

This will scale the X size of the view myView from the default (1.0) to slightly larger (1.25). You will then need to do the same for the SCALE_Y property. Note that you will probably want to keep track of the current scale value so that your next animations look nice. For example:

float currentScale = 1.0;
...
void scaleMyView(float newScale) {
    ObjectAnimator oa = ObjectAnimator.ofFloat(myView, View.SCALE_X, currentScale, newScale);
    oa.setDuration(25);
    oa.start();
    currentScale = newScale;
}

See also the documentation on ObjectAnimators if you need more info. Hope this helps!

Upvotes: 1

nshmura
nshmura

Reputation: 6010

There is greate animation library for Android.
https://github.com/daimajia/AndroidViewAnimations
https://github.com/2359media/EasyAndroidAnimations

Upvotes: 1

user3215326
user3215326

Reputation:

Every View has setScaleX and setScaleY methods. I believe you can use it for this. As far as syncing it to the music, that depends on the way you're playing it.

Upvotes: 1

Related Questions